190900404 has 36 divisors (see below), whose sum is σ = 483930720. Its totient is φ = 63451920.

The previous prime is 190900393. The next prime is 190900421. The reversal of 190900404 is 404009091.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×190900404³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5539 + ... + 20309.

It is an arithmetic number, because the mean of its divisors is an integer number (13442520).

Almost surely, 2^190900404 is an apocalyptic number.

It is an amenable number.

190900404 is an abundant number, since it is smaller than the sum of its proper divisors (293030316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190900404 is a wasteful number, since it uses less digits than its factorization.

190900404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15140 (or 15135 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 190900404 is about 13816.6712344182. The cubic root of 190900404 is about 575.7964051864.

Adding to 190900404 its reverse (404009091), we get a palindrome (594909495).

The spelling of 190900404 in words is "one hundred ninety million, nine hundred thousand, four hundred four".